Ulead MEDIASTUDIO PRO 8.0, Руководство пользователя

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CHAPTER 3: EDITING 69
Setting field options for video clips
Video Editor allows you to work with both field-based and frame-based video files.
Field-based video stores video data as two distinct fields of information for each
frame. This allows the video to play back flicker free on a television which
interlaces both of these fields in odd/even scan lines. If your video is only for
computer playback, you should save your work as frame-based.
To specify the type of video you are working with:
1. Select the clip.
2. Select Clip: Media Source Options. (Right-click the clip and from the pop-up
menu, select Media Source Options.) This will open the Media Source
Options dialog box.
• Freeze before frame. When the clip is played back, it will "freeze" on the
designated frame from the beginning of the clip, up to and including the
frame itself, and then resume normal playback.
• Freeze after frame. When the clip is played back, it will playback normally
until it comes to the designated frame and then "freeze" to the end of the
clip.
If both boxes are checked, the clip will freeze both before a particular frame
and after a particular frame. See the illustration below for an example.
In the above illustration, the top row represents a normal clip of fifteen
frames. In the second row, Freeze before frame was selected and frame 5
was frozen. Frame 5 is then repeated (frozen) until frame 6 is reached.
Normal playback resumes. Freeze after frame was also selected with the
value of 10, and the frame is repeated (frozen) until the end of the clip. So
this clip freezes at two different points. If you want to freeze more frames
within this one clip, you must first use the Scissors Tool to cut your clip into
separate clips.
Freeze before frame Freeze after frame